If you look up the term "suspension bands" on youtube you will get a variety of exercises that you may be able to adapt to your jump rope. The exercises target your trunk or core muscles, upper and lower body giving you a very good functional workout. TRX is a popular band and this video shows a variety of exercises with the strap using your body weight as resistance.
A jump rope may not be strong enough to safely perform some of the exercises in the video. Since you are on a budget you can by straps and make your own suspension band.
And of course you can get some pretty good benefits from jumping rope.
